DN300 Dual Plate Wafer Type Check Valve

• Customization: Available
• Material: Cast Iron
• Connection Form: Wafer
• Structure: Butterfly
• Function: Nrvr Silence
• Application: Industrial Usage, Water Industrial Usage
• Size: Dn50-900
• Transport Package: Plywood Case
• Specification: CE
• Trademark: TFW
• Origin: Tianjin China
• HS Code: 84813000
• Production Capacity: 5000PCS/Month

Product Description

Dual Plate Wafer Check Valve
1) Size: 2" - 36"
2) Class: 150lbs

Technical standards:
1) Design and manufacture: API 6D
2) Face-to-face: ANSI B16.10
3) Flange end: ANSI B16.5
4) Inspection and test: API 598

Main materials:
1) Body and disc: Ductile iron, carbon steel, stainless steel
2) Stem: Stainless steel
3) Torsion spring: Stainless steel
4) Seal surface: Buna-n rubber, stainless steel, gathered four fluorine
Ethylene, and nylon plastics
 

Features:

1. Small in size, light in weight, compact in structure,easy in maintenance.

2. Two torsion springs are used excreting on each of the pair valve plates,which close the plates quickly and automatically.

3. The quick-close action prevents the medium from flowing back and eliminates water hammer effect.

4. Short body structure length and good rigidity.

5. This valve is tightly sealed, without leakage under the pressure water test.

6. Safe and reliable in operation,high interference-resistance.
 

 Performance:

Nominal pressue (MPa)		1.0	1.6
Nominal diameter(mm)		50-600	50-600
Test pressure	Shell	1.5	2.4
(MPa)	Seal	1.1	1.76
Applicable temperature		150
Applicable medium		Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids, Alkalis, etc.

Standard:

Design & Manufacture	Flange Connection	Face to Face Dimension	Test & Inspection
API 594	DIN PN10/16/25	API594	API 598

No.	Part Name	Material
1	Body	Cast Iron/Ductile Iron
2	Plate	Ductile iron+Ni,CF8,CF8M,Bronze
3	Spring	Stainless steel
4	Hinge Pin	Stainless steel
5	Plug	Carbon steel
6	Body Bearing	PTFE
7	Spring Bearing	PTFE
8	Stop pin	Stainless steel
9	Eye Bolt	Carbon steel
10	Body seat	NBR,EPDM,VITON,NEOPRENE